|Publication number||US6974284 B2|
|Application number||US 10/655,055|
|Publication date||Dec 13, 2005|
|Filing date||Sep 4, 2003|
|Priority date||Sep 5, 2002|
|Also published as||CN1274463C, CN1488464A, DE60314949D1, DE60314949T2, EP1396308A2, EP1396308A3, EP1396308B1, US20040047698|
|Publication number||10655055, 655055, US 6974284 B2, US 6974284B2, US-B2-6974284, US6974284 B2, US6974284B2|
|Original Assignee||Omi Kogyo Co., Ltd.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (16), Non-Patent Citations (1), Referenced by (1), Classifications (17), Legal Events (3)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present invention relates to a cutter driving apparatus to be incorporated into a boring machine.
A boring machine provided with a cutter driving apparatus shown in
Since the drive shaft 106 and the spindle 112 are connected to each other with a spline 113, the spindle 112 can move relative to the drive shaft 106 along the axis 106 a thereof. A quill 115 rotatably surrounds the spindle 112 and is movable integrally with the spindle 112 along the axis 106 a. A pinion 118 is meshed with a rack 119 provided on the quill 115 and is rotated by operating an operation handle (not shown). Thus, when the pinion 118 rotates, both the quill 115 and the spindle 112 move along the axis 106 a.
When the spindle 112 moves along the axis 106 a, the distance over which a cutter 114 attached to the spindle 112 moves, the stroke S shown in
Accordingly, the object of the present invention is to provide a cutter driving apparatus that facilitates boring operations by boring machines.
To achieve the foregoing and other objectives and in accordance with the purpose of the present invention, a cutter driving apparatus is provided to be incorporated into a boring machine. The cutter driving apparatus includes a spindle rotating around its own axis, a moving member moving along the axis of the spindle, and a transmission member transmitting a power to the moving member so as to move the moving member along the axis of the spindle. The spindle has a cutter attached thereto. The spindle moves integrally with the moving member along the axis of the spindle. The moving member has a peripheral part disposed apart from the spindle. The transmission member transmits the power to the moving member through the peripheral part.
The present invention provides another cutter driving apparatus, which includes a spindle, a moving member, an operation member, a transmission member, and a joint. The spindle rotates around its own axis. The spindle has a cutter attached thereto. The moving member moves along the axis of the spindle. The spindle moves integrally with the moving member along the axis of the spindle. The operation member is operated so as to move the moving member along the axis of the spindle. The transmission member is located between the operation member and the moving member. The operation member is removably connected to the transmission member. The joint connects the operation member with the transmission member. The joint is shifted selectively between an admissible state where the joint admits transmission of a power from the operation member to the transmission member and an inadmissible state where the joint does not admit transmission of a power from the operation member to the transmission member. The power transmitted to the transmission member is transmitted to the moving member to move the moving member along the axis of the spindle.
Other aspects and advantages of the invention will become apparent from the following description, taken in conjunction with the accompanying drawings, illustrating by way of example the principles of the invention.
The invention, together with objects and advantages thereof, may best be understood by reference to the following description of the presently preferred embodiments together with the accompanying drawings in which:
One embodiment of the present invention will be described referring to
As shown in
The cutter driving apparatus will be described below in detail.
A drive shaft 6 shown in
A spindle 12 shown in
As shown in
A transmission shaft 18 shown in
As shown in
A cutter 14 can be removably attached to the distal end of the spindle 12. The cutter 14 attached to the spindle 12 is located outside the housing 5 to rotate and move integrally with the spindle 12.
Therefore, a torque output from the electric motor 4 through the output shaft 10 is transmitted through the drive shaft 6 to the spindle 12. Then, the cutter 14 attached to the spindle 12 rotates integrally with the spindle 12 around the axis 12 a, depending on the torque.
When the spindle 12 moves along its axis 12 a, the distance over which the cutter 14 attached to the spindle 12 moves, the stroke S shown in
As shown in
The handle 21 has a main body 23 and a joint 25 attached to one end portion thereof. The joint 25 contains a center hole 26, and the axis of the center hole 26 intersects orthogonally with the major axis of the main body 23. The joint 25 is rotatable around the axis of the center hole 26 relative to the main body 23. The center hole 26 has a substantially square shape. In other words, the center hole 26 is defined by planes containing four plane surfaces 26 a arranged around the axis thereof at 90° intervals. Each plane surface 26 a has a recess 30 defined thereon. The center hole 26 permits insertion of the end portion 22 of the transmission shaft 18. The end portion 22 inserted to the center hole 26 enables the transmission shaft 18 to rotate integrally with the joint 25.
If the pin 31 is located at the protrusion position when the end portion 22 of the transmission shaft 18 is inserted to the center hole 26, a part of the ball 33 protruding from the plane surface 22 a is brought into the recess 30. Thus, the transmission shaft 18 becomes unable to disengage from the joint 25. Meanwhile, when the pin 31 is located at the retraction position, the part of the ball 33 protruding from the plane surface 22 a retracts from the recess 30. Thus, the transmission shaft 18 becomes disengageable from the joint 25.
A plurality of recesses 34 is formed on the peripheral surface of the joint 25. The main body 23 is provided with a movable part in the vicinity of the joint 25. In this embodiment, the movable part is a pin 35. The pin 35 moves between a protrusion position (see
When the cutter 14 attached to the spindle 12 is to be moved along the axis 12 a of the spindle 12, the handle 21 is fitted to one end portion 22 of the transmission shaft 18. Then, after the knob 35 a is brought to the locking position, the handle 21 is rotated around the axis of the center hole 26. Thus, the transmission shaft 18 rotates integrally with the handle 21 to cause the cutter 14 to move along the axis 12 a of the spindle 12.
In the case where rotation of the handle 21 in a desired direction is interfered by an obstacle, the knob 35 a is brought to the unlocking position, and the handle 21 is rotated in the direction opposite to the desired direction. The knob 35 a is then returned to the locking position, and the handle 21 is rotated in the desired direction. Thus, the cutter 14 moves in one direction by reciprocating the handle 21 without detaching the handle 21 from the transmission shaft 18.
When the handle 21 is detached from the transmission shaft 18, the pin 31 is brought to the retraction position from the protrusion position resisting against the urging force of the helical compression spring 32. Thus, the handle 21 can be disengaged from the transmission shaft 18.
The present examples and embodiments are to be considered as illustrative and not restrictive and the invention is not to be limited to the details given herein, but may be modified within the scope and equivalence of the appended claims.
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|1||European Search Report of application EP 03 01 9848 dated Jan. 29, 2004.|
|Citing Patent||Filing date||Publication date||Applicant||Title|
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|U.S. Classification||408/141, 408/95, 408/76|
|International Classification||B23B47/18, B23Q5/38, B23Q5/22, B25H1/00, B23B47/04, B23B47/26, B26D5/08|
|Cooperative Classification||Y10T408/5623, B25H1/0057, Y10T408/554, Y10T408/73, B23Q5/385|
|European Classification||B25H1/00C4, B23Q5/38B|
|Sep 4, 2003||AS||Assignment|
Owner name: OMI KOGYO CO., LTD., JAPAN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:OMI, SHOHEI;REEL/FRAME:014470/0638
Effective date: 20030828
|Apr 16, 2009||FPAY||Fee payment|
Year of fee payment: 4
|Mar 13, 2013||FPAY||Fee payment|
Year of fee payment: 8